/**
 * Software License, Version 1.0
 * 
 * Copyright 2003 The Trustees of Indiana University.  All rights reserved.
 * 
 *
 *Redistribution and use in source and binary forms, with or without 
 *modification, are permitted provided that the following conditions are met:
 *
 *1) All redistributions of source code must retain the above copyright notice,
 * the list of authors in the original source code, this list of conditions and
 * the disclaimer listed in this license;
 *2) All redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the disclaimer listed in this license in
 * the documentation and/or other materials provided with the distribution;
 *3) Any documentation included with all redistributions must include the 
 * following acknowledgement:
 *
 *"This product includes software developed by the Community Grids Lab. For 
 * further information contact the Community Grids Lab at 
 * http://communitygrids.iu.edu/."
 *
 * Alternatively, this acknowledgement may appear in the software itself, and 
 * wherever such third-party acknowledgments normally appear.
 * 
 *4) The name Indiana University or Community Grids Lab or NaradaBrokering, 
 * shall not be used to endorse or promote products derived from this software 
 * without prior written permission from Indiana University.  For written 
 * permission, please contact the Advanced Research and Technology Institute 
 * ("ARTI") at 351 West 10th Street, Indianapolis, Indiana 46202.
 *5) Products derived from this software may not be called NaradaBrokering, 
 * nor may Indiana University or Community Grids Lab or NaradaBrokering appear
 * in their name, without prior written permission of ARTI.
 * 
 *
 * Indiana University provides no reassurances that the source code provided 
 * does not infringe the patent or any other intellectual property rights of 
 * any other entity.  Indiana University disclaims any liability to any 
 * recipient for claims brought by any other entity based on infringement of 
 * intellectual property rights or otherwise.  
 *
 *LICENSEE UNDERSTANDS THAT SOFTWARE IS PROVIDED "AS IS" FOR WHICH NO 
 *WARRANTIES AS TO CAPABILITIES OR ACCURACY ARE MADE. INDIANA UNIVERSITY GIVES
 *NO WARRANTIES AND MAKES NO REPRESENTATION THAT SOFTWARE IS FREE OF 
 *INFRINGEMENT OF THIRD PARTY PATENT, COPYRIGHT, OR OTHER PROPRIETARY RIGHTS. 
 *INDIANA UNIVERSITY MAKES NO WARRANTIES THAT SOFTWARE IS FREE FROM "BUGS", 
 *"VIRUSES", "TROJAN HORSES", "TRAP DOORS", "WORMS", OR OTHER HARMFUL CODE.  
 *LICENSEE ASSUMES THE ENTIRE RISK AS TO THE PERFORMANCE OF SOFTWARE AND/OR 
 *ASSOCIATED MATERIALS, AND TO THE PERFORMANCE AND VALIDITY OF INFORMATION 
 *GENERATED USING SOFTWARE.
 */
package cgl.narada.jms;

import java.util.Properties;
import java.util.Random;

import javax.jms.JMSException;
import javax.jms.TopicConnectionFactory;

/**
   @author Shrideep Pallickara
   $Revision$
   $Date$
*/

public class NBJmsInitializer {
  private Properties bridgeProperties;
  private String transportType="niotcp";
  private Random random;
  private int entityId;
  private String moduleName = "NBJmsInitializer: ";

  public NBJmsInitializer(Properties bridgeProperties, 
			  String transportType, int entityId) 
    throws JMSException {
	  performInitialization(bridgeProperties, transportType, entityId);
  }/* end constructor */

  
  public NBJmsInitializer(Properties bridgeProperties, 
               			  String transportType) 
  	throws JMSException {
	  if (random == null) {
		  random = new Random(System.currentTimeMillis());
	  }
	  int generatedId = random.nextInt();
	  performInitialization(bridgeProperties, transportType, generatedId);
  }
  
  
  public NBJmsInitializer(String hostname, int portnum) 
  	throws JMSException {
	if (hostname == null) {
			throw new JMSException(moduleName + "Specified hostname is NULL!");
		}
		Properties props = new Properties();
		props.put("hostname", hostname);
		props.put("portnum", "" + portnum);
		if (random == null) {
			random = new Random(System.currentTimeMillis());
		}
		int generatedId = random.nextInt();
		performInitialization(bridgeProperties, transportType, generatedId);
  }
  
  private void performInitialization(Properties bridgeProperties, 
                          			  String transportType, int entityId) 
  throws JMSException {
	  this.bridgeProperties = bridgeProperties;
	    if (transportType != null) {
	      this.transportType = transportType;
	    }
	    this.entityId = entityId;
	    
	    if (bridgeProperties == null) {
	      throw new JMSException(moduleName + 
				     "Specified bridgeProperties is NULL");
	    } else {
	      if (bridgeProperties.size() == 0) {
		throw new JMSException(moduleName + 
				       "Specified bridgeProperties is of size 0");
	      }
	    }
	    
	    if (entityId == 0) {
	      throw new JMSException(moduleName + 
				     "Specified entityId=0, please specify valid id");
	    }
  }
  
  public TopicConnectionFactory lookup() {
    return 
      new JmsTopicConnectionFactory(bridgeProperties, transportType, entityId);
    
  }/*end-lookup*/


}
